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我目前在JBoss AS7中出現一個間歇性異常，很遺憾，我現在還不能重現。JBoss AS7在MDB鎖定後掛起
我們目前正在運行兩個基本上被設置爲JMS消息的生產者/消費者的應用程序。我們使用默認的HornetQ配置和5個MDB池。
兩個應用程序都開始正常工作，按預期發送和接收消息。但是，一段時間後，所有多邊開發銀行被鎖定（它們每收到一條消息，但沒有完成處理）和JBoss掛起一段時間後顯示每隔十分鐘以下消息：
[org.jboss.ejb3.invocation] (Thread-21081 (HornetQ-client-global-threads-1636833629)) JBAS014134: EJB Invocation failed on component MyMessageListener for method public abstract void javax.jms.MessageListener.onMessage(javax.jms.Message): javax.ejb.EJBException: JBAS014516: Failed to acquire a permit within 10 MINUTES
從JBoss的代碼jarvana，它似乎如果信號量無法獲取，則會設置此錯誤：
/**
* Get an instance without identity.
* Can be used by finders,create-methods, and activation
*
* @return Context /w instance
*/
public T get() {
try {
boolean acquired = semaphore.tryAcquire(timeout, timeUnit);
if (!acquired)
throw new EJBException("Failed to acquire a permit within " + timeout + " " + timeUnit);
} catch (InterruptedException e) {
throw new EJBException("Acquire semaphore was interrupted");
}
...
問題是，爲什麼MDB被鎖定？他們不應該超時並繼續處理嗎？我在standalone.xml文件中將超時設置爲5分鐘，但他們從來沒有超時。
<session-bean>
<stateless>
<bean-instance-pool-ref pool-name="slsb-strict-max-pool"/>
</stateless>
<stateful default-access-timeout="5000" cache-ref="simple"/>
<singleton default-access-timeout="5000"/>
</session-bean>
有誰知道會發生什麼？
我也非常樂意接受有關如何模擬問題或其他方式設置MDB超時的任何建議。
任何幫助，將不勝感激。
謝謝你的時間。
編輯：
所以，我終於能夠通過發送消息監聽睡比實例採集超時不再是簡單重現該問題。以下是測試代碼：
<!-- standalone.xml -->
<strict-max-pool name="mdb-strict-max-pool" max-pool-size="5" instance-acquisition-timeout="30" instance-acquisition-timeout-unit="SECONDS"/>
MDB：
@MessageDriven(name = "TestMDB", activationConfig = {
@ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),
@ActivationConfigProperty(propertyName = "destination", propertyValue = "queue/myQueue"),
@ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge")//,
})
public class TestMDB implements MessageListener {
private final static Logger LOGGER = Logger.getLogger(TestMDB.class
.toString());
@Resource
private MessageDrivenContext ctx;
private final static int sleepingTime = MyProperties.SLEEP_MILLISECS;
/**
* @see MessageListener#onMessage(Message)
*/
public void onMessage(Message rcvMessage) {
ObjectMessage msg = null;
Future<String> future = null;
MyResource res = null;
try {
if (rcvMessage instanceof ObjectMessage) {
msg = (ObjectMessage) rcvMessage;
res = (MyResource)msg.getObject();
LOGGER.info("Received resource: " + res);
Thread.sleep(sleepingTime);
LOGGER.info("Released resource: " + res);
} else {
LOGGER.warning("Message of wrong type: "
+ rcvMessage.getClass().getName());
}
} catch (JMSException e) {
throw new RuntimeException(e);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
關於jboss的相關文章（未解決），https：//developer.jboss.org/message/794455 – Gab